package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;
    /**
     * 登录
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        //
        //②. 根据页面提交的用户名username查询数据库中员工数据信息
        //
        //③. 如果没有查询到, 则返回登录失败结果
        //
        //④. 密码比对，如果不一致, 则返回登录失败结果
        //
        //⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        //
        //⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(qw);
        if(emp == null){
            return R.error("登录失败！");
        }
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败！");
        }
        if(emp.getStatus()==0){
            return R.error("账户已禁用！");
        }
        //不能把密码返回前端
        emp.setPassword(null);
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);

    }

    @RequestMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }
    /**
     * 添加员工
     */

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        //要对密码进行MD5加密
        log.info("新增员工，员工信息：{}",employee.toString());
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);
         employeeService.save(employee);
        return R.success("保存成功！");
   }

    /**
     * 分页查询
     */
    @GetMapping("/page")
    public R<Page> selectByPage(int page, int pageSize, String name){
        log.info("页面:{},大小:{},姓名:{}",page,pageSize,name);
        log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);

        //先创建分页构造器,封装参数，结果也封装在这里
        Page page1 = new Page(page,pageSize);
        //再构建条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //进行条件过滤,先判断是否为空，不为空加上这个条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        employeeService.page(page1, queryWrapper);
//        page1 = employeeService.page(page1, queryWrapper);
//        HashMap map = new HashMap<>();
//        map.put("records",page1.getRecords());
//        map.put("total",page1.getTotal());
        return R.success(page1);
    }

    /**
     * 修改员工的信息,根据员工id修改
     */

    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        //设置修改的时间与修改的id
        employee.setUpdateTime(LocalDateTime.now());
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功！");
    }

    /**
     * 根据id进行查询
     *
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息........");
        Employee emp = employeeService.getById(id);
        if(emp!=null){
            return R.success(emp);
        }
       return R.error("没有查询到员工信息");
    }
}
